I have three Sun OS laptops waiting to be analyzed in a single Tadpole box so I assume they’re some form of Tadpole..I will check to see what model(s). My brief testing of the units revealed similar symptoms to yours. I forget the model(s). Bill On Thu, Jun 5, 2025 at 4:23 AM Andreas Holz via cctalk < cctalk(a)classiccmp.org&gt; wrote: > Hi all, > > by surprise I got a Tadpole Sparcbook 2 some time ago. > > Sadly there seems to be almost no documentation available in the net for > a Sparcbook 2, neither a technical/service nor a user manual, only for > Sparcbook 1 and later models. > > I do have the following issues: > > - the battery pack is missing. > I found two ressources, e.g. the CHM - but none does have any infos > about the battery pack > > - The external power connector requieres 18V - no problem > > - After connecting the fitting power the Sparcbook does power up, the > display is lit and the unit is trying to boot from the internat SCSI > disc. Nevertheless the boot process is failing this is a good sign. > > - after trying to reboot the unit will be almost dead. While pressing > the power on button the LEDs on the left upper side of the display will > be lit shortly, but nothing else will happen. > > - trying to reboot an power on the same as above will happen > > If I'll keep the unit several weeks/months unpowered the unit will power > up again - but of course will be stuck again while trying to boot from > disk and the same semidead issues as noted above. > > I'm suspecting the TOD chip/battery is deads or are there any other > sugegstions? > > Up to today I didn't have a look inside of the unit ... > > Does any have the manuals hidden in theirs shelves? > > Best > > Andreas > >